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cmd/link: .go.buildinfo is gc'ed by --gc-sections [1.19 backport] #58223

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gopherbot opened this issue Feb 1, 2023 · 2 comments
Closed

cmd/link: .go.buildinfo is gc'ed by --gc-sections [1.19 backport] #58223

gopherbot opened this issue Feb 1, 2023 · 2 comments
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CherryPickApproved Used during the release process for point releases compiler/runtime Issues related to the Go compiler and/or runtime.
Milestone
Go1.19.6

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@gopherbot
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@rsc requested issue #58222 to be considered for backport to the next 1.19 minor release.

@gopherbot please backport go1.19 go1.20
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label Feb 1, 2023
@gopherbot gopherbot mentioned this issue Feb 1, 2023
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@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Feb 1, 2023
@gopherbot gopherbot added this to the Go1.19.6 milestone Feb 1, 2023
@gopherbot
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Change https://go.dev/cl/464795 mentions this issue: [release-branch.go1.19] cmd/link: keep go.buildinfo even with --gc-sections

@dr2chase dr2chase added the CherryPickApproved Used during the release process for point releases label Feb 8, 2023
@gopherbot gopherbot removed the CherryPickCandidate Used during the release process for point releases label Feb 8, 2023
gopherbot pushed a commit that referenced this issue Feb 10, 2023
@rsc @dr2chase
[release-branch.go1.19] cmd/link: keep go.buildinfo even with --gc-se…
f69dbb6 
…ctions

If you use an external linker with --gc-sections, nothing refers
to .go.buildinfo, so the section is deleted, which in turns makes
'go version' fail on the binary. It is important for vulnerability
scanning and the like to be able to run 'go version' on any binary.

Fix this by inserting a reference to .go.buildinfo from the rodata
section, which will not be GC'ed.

Fixes #58222.
Fixes #58223.

Change-Id: I1e13e9464acaf2f5cc5e0b70476fa52b43651123
Reviewed-on: https://go-review.googlesource.com/c/go/+/464435
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/go/+/464795
@gopherbot
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Closed by merging f69dbb6 to release-branch.go1.19.

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Labels
CherryPickApproved Used during the release process for point releases compiler/runtime Issues related to the Go compiler and/or runtime.
Projects
Go Compiler / Runtime
Status: Done
Milestone
Go1.19.6
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@dr2chase @gopherbot